JP4668434B2 - Pendulum cart for railway vehicle and pendulum control method for the cart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pendulum trolley for a railway vehicle and a pendulum control method for the trolley, and more particularly relates to a pendulum trolley for a railway vehicle including an actuator that drives a pendulum frame in the width direction of the vehicle and a pendulum control method for the trolley. is there.
[0002]
[Prior art]
As a conventional pendulum cart for a railway vehicle, for example, there is one disclosed in JP-A-4-173472. In this cart, as shown in FIG. 5, the vehicle body 1 is supported so as to be swingable in the width direction of the vehicle with respect to the cart frame 2, and a pendulum beam 3 integrated with the vehicle body 1 via an air spring is mounted on the cart. The frame 2 is swingably held, and a fluid cylinder 4 is mounted between the pendulum beam 3 and the carriage frame 2, and the pendulum beam 3 is caused to swing with respect to the carriage frame 2 by the fluid cylinder 4. ing.
[0003]
[Problems to be solved by the invention]
In such a railcar pendulum cart, a plurality of fluid cylinders 4 must be mounted in the pendulum beam 3, which requires a lot of space. However, for example, in a carriage equipped with a variable mechanism such as a variable gauge carriage, the variable mechanism occupies a lot of space in the carriage, so that the floor space is not raised and the mounting space for the fluid cylinder 4 is reduced. It is difficult to secure.
Moreover, in such a railcar pendulum cart, inspection of the fluid cylinder 4 provided in the pendulum beam 3 is difficult, and maintenance-free operation has been desired.
Further, in such a railcar pendulum cart, the responsiveness of the fluid cylinder 4 is not high, and thus higher-performance pendulum control cannot be performed.
[0004]
The present invention has been made in view of the above circumstances, and has a compact drive mechanism for swinging a vehicle body, enables maintenance-free operation, and further has a highly responsive pendulum trolley for a railway vehicle and a pendulum. An object is to provide a control method.
[0005]
[Means for Solving the Problems]
The pendulum bogie 100 for a railway vehicle according to claim 1 of the present invention has an arcuate bottom surface (upper surface 22a) that curves downward on a pillow beam 20 disposed on the bogie frame 10 around a rocking center O of the vehicle. ) And an arcuate end surface (lower surface 31a) facing the arcuate bottom surface about the center of swinging of the vehicle is formed on the pendulum frame 30 fixed to the lower surface of the vehicle body, and the arcuate bottom surface of the pillow beam A position detecting device (position) for detecting a movement of the pendulum frame with respect to the pillow beam, comprising a linear motor that applies a driving force in a vehicle width direction to the pendulum frame between the pendulum frame and the arcuate end surface of the pendulum frame A detection sensor 74) is provided, and the pendulum frame is locked to the neutral position by the linear motor by detecting that the pendulum frame is in the neutral position of the pillow beam by the position detection device. Yes.
[0006]
According to the first aspect of the present invention, since the linear motor is used as the actuator for swinging the pendulum frame (vehicle body), the installation space is small, and for example, even a special cart such as a variable gauge carriage is easy. Even if a large pendulum angle (for example, 7 °) is satisfied, the vehicle body floor surface height can be lowered, and further, since there is no worn portion, maintenance-free operation can be achieved.
In addition, since the linear motor has a quick response, there is little swing delay and a real-time response can be made according to the situation, so that a good performance can be obtained even with a natural pendulum (without using a control program).
In addition, since the pendulum frame is securely locked at the neutral position, the vehicle body is set to the neutral position when the pendulum action is unnecessary when passing a small curve (for example, a curve radius of 1200 m or more) or when traveling at a low speed (for example, a vehicle speed of 50 km / hour or less). It can be reliably maintained.
[0007]
According to a second aspect of the present invention, in the pendulum carriage for a railway vehicle according to the first aspect, a rail guide 61 is disposed on one of the pillow beam or the pendulum frame, and the other of the pillow beam or the pendulum frame. In addition, a guide rail 62 that is fitted to the rail guide and moves in an arc shape around the center of swinging of the vehicle is provided.
[0008]
According to the second aspect of the present invention, since the distance between the pendulum frame and the pillow beam, that is, the distance between one part and the other part constituting the linear motor is always kept constant, stable pendulum operation can be obtained. It is done.
[0011]
The invention according to claim 3 is the pendulum control method for a railcar pendulum cart according to claim 1 or 2 , wherein the linear motor generates a vehicle body tilting moment when traveling on an arbitrary curved road. It is characterized in that it is set smaller than the inclination moment generated by the vehicle body centrifugal force.
[0012]
According to the third aspect of the present invention, the excessive centrifugal force can be canceled by the linear motor so that the optimum pendulum angle can be obtained, and there is no possibility of swinging in the reverse direction.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a main part of a pendulum carriage for a railway vehicle, FIG. 1 is a front view showing a cross section of a linear motor section, and FIG. 2 is a cross section taken along line AA in FIG. FIG. 3 is an enlarged cross-sectional view, FIG. 3 is a plan view of the main part shown in FIG. 1, and FIG. 4 is a front view showing the guide part in cross section.
[0014]
As shown in FIGS. 1 and 4, this railcar pendulum cart includes a cart frame 10, a pillow beam 20, a pendulum frame 30, and the like. The pillow beam 20 is supported by the carriage frame 10 via an air spring 40, and the pendulum frame 30 is fixed integrally to the vehicle body 50. The vehicle body 50 is supported by a guide portion 60 described later so as to be swingable in the vehicle width direction with respect to the carriage frame 10.
[0015]
As shown in FIGS. 1 and 2, the carriage frame 10 includes two lateral beams 11 mounted in the width direction of the vehicle, and side beams 12 and 12 mounted between the side ends of the lateral beam 11. It is constituted by. An axle box (not shown) is installed on the side beams 12 and 12, and wheels 13 and 13 are attached using the axle box as a bearing.
[0016]
As shown in FIGS. 1 and 4, the pillow beam 20 extends in the width direction of the vehicle, and has a recess 21 at the center in the front-rear direction (the center in the thickness direction) of the vehicle. The recess 21 extends in the width direction of the vehicle, a pedestal 22 is installed on the bottom surface, and the upper surface 22a of the pedestal 22 is formed in an arc shape centering on the swing center O of the vehicle body 50 (circle). Arc bottom). Further, as shown in FIGS. 2 and 4, the pillow beam 20 has flange portions 23, 23 on the front and rear surfaces (front and rear direction front and rear portions of the vehicle) (see FIG. 2). The upper surfaces 23 a and 23 a of the flange portions 23 and 23 are formed in a shape that substantially follows an arc shape centered on the swing center of the vehicle body 50.
[0017]
As shown in FIGS. 1, 2, and 3, the pendulum frame 30 extends in the width direction of the vehicle and has a convex portion 31 at the center in the front-rear direction (thickness direction center) of the vehicle. The convex portion 31 extends in the width direction of the vehicle, and the lower surface 31a is formed in an arc shape centering on the swing center O of the vehicle body 50 (arc-shaped end surface). Further, the pendulum frame 30 has vertical walls 32, 32 on the front surface and the rear surface (front and rear direction front and rear portions of the vehicle) (see FIG. 2).
[0018]
Between the pillow beam 20 and the pendulum frame 30 configured in this manner, a guide portion 60 that supports the pendulum frame 30 so as to be swingable on the pillow beam 20, and the width of the vehicle with respect to the pillow beam 20. A linear motor 70 that moves in the direction and a pendulum restraining device 80 that locks the pendulum frame 30 at the center of the pillow beam 20 in the vehicle width direction are provided.
[0019]
As shown in FIGS. 2, 3, and 4, the guide portion 60 has a cushioning material 24 made of an elastic material such as rubber on the upper surface 23 a of the flange portion 23 of the pillow beam 20 and the vertical wall 20 a that defines the recess 21. A rail guide 61 having a U-shaped cross section installed through a circular arc, and an arcuate guide rail 62 installed on the vertical wall 32 of the pendulum frame 30 (see FIG. 2). The guide rail 62 is fitted into a recess 61a defined in the rail guide 61 as shown in a circle in a partially enlarged view in FIG. A linear guide (for example, an NSK linear guide) 63 is configured. Accordingly, the pendulum frame 30 is swingably supported by the pillow beam 20 via the linear guide 63, and the pendulum frame 30 swings while rolling the ball 63a of the linear guide.
[0020]
As shown in FIGS. 1, 2, and 3, the linear motor 70 includes an electromagnetic coil (linear motor primary side) 71 installed on the arcuate lower surface 31 a of the convex portion 31 of the pendulum frame 30, and the pillow beam 20. The rear cushion plate (linear motor secondary side) 72 installed on the upper surface 22a of the pedestal 22 is configured such that the electromagnetic coil 71 faces the rear cushion plate 72 with a slight gap.
The linear motor 70 processes the curve detection by the G sensor and the vehicle speed data by a pendulum control device (not shown), operates the pendulum frame 30 in a direction to cancel the excess centrifugal force, and the vehicle passes the curve. The pendulum angle can be set to be optimal. However, in this case, it is necessary to control the linear motor 70 within a range not exceeding the moment generated by the centrifugal force generated by the natural pendulum so that the pendulum frame 30 is not swung in the reverse direction.
Further, the linear motor 70 can store curve data in advance in the pendulum control device, and the pendulum frame 30 can be moved so as to obtain an optimum pendulum angle according to the control program.
Further, the displacement amount from the neutral position of the pendulum frame 30 is measured by the linear motor 70, and the pendulum frame 30 is moved based on the displacement amount so that the pendulum angle α (see FIG. 1) becomes an optimum angle. You can also. As shown in FIG. 3, the displacement amount of the pendulum frame 30 is measured by installing a measurement rail 73 on the pillow beam 20 and installing a position detection sensor 74 on the pendulum frame 30. Can be confirmed.
[0021]
As shown in FIGS. 1 and 2, the pendulum restraining device 80 is formed by an electromagnetic solenoid 81 installed at the center of the pendulum frame 30 in the vehicle width direction and a hole 82 formed at the center of the pillow beam 20 in the vehicle width direction. The pendulum frame 30 is locked to the pillow beam 20 by fitting the plunger 81 a of the electromagnetic solenoid 81 into the hole 82 of the pillow beam 20. The pendulum restraining device 80 may detect that the pendulum frame 30 is in the neutral position by the position detection sensor 74, thereby fitting the plunger 81 a of the electromagnetic solenoid 81 into the hole 82 of the pillow beam 20.
Further, the pendulum frame 30 can be held at the neutral position by the linear motor 70 without using the pendulum restraining device 80.
[0022]
In addition, the said embodiment showed an example of the pendulum cart for railcars concerning this invention, and it is not limited to this embodiment, Various aspects are taken within the scope of the claims of this invention. Of course you can.
For example, in the above embodiment, the electromagnetic coil (linear motor primary side) 71 is installed on the pendulum frame 30 and the rear cushion plate (linear motor secondary side) 72 is installed on the pillow beam 20. It goes without saying that the (linear motor primary side) 71 may be installed on the pillow beam 20 and the rear cushion plate (linear motor secondary side) 72 may be installed on the pendulum frame 30.
In the above embodiment, the rail guide 61 is installed on the pillow beam 20 and the guide rail 62 is installed on the pendulum frame 30. However, the rail guide 61 is installed on the pendulum frame 30 and the guide rail 62 is installed on the pillow beam. 20 may be installed.
Furthermore, in the above embodiment, the electromagnetic solenoid 81 is installed in the pendulum frame 30 and the hole 82 is formed in the pillow beam 20. However, the electromagnetic solenoid 81 is installed in the pillow beam 20 and the hole 82 is installed in the pendulum frame 30. You may form in.
[0023]
【The invention's effect】
According to the pendulum carriage for a railway vehicle of the present invention, a linear motor is used as an actuator for swinging the pendulum frame (body), so that a small installation space is required. For example, a special carriage such as a variable gauge carriage is used. However, it can be easily incorporated, and even if a large pendulum angle (for example, 7 °) is satisfied, the vehicle body floor surface height can be lowered, and further, since there is no worn portion, maintenance-free operation can be achieved.
Further, according to the pendulum trolley for a railway vehicle of the present invention, since the linear motor has good responsiveness, there is little swing delay and a real-time response can be quickly made according to the situation at the time. No) can maintain good performance.
Furthermore, according to the control method of the pendulum trolley of the present invention, it is possible to cancel the excess centrifugal force so that the optimum pendulum angle is obtained, and there is no possibility of swinging in the reverse direction. More reliable vehicle control is possible.
[Brief description of the drawings]
FIG. 1 is a front view showing a main part of a pendulum carriage for a railway vehicle to which the present invention is applied, and showing a linear motor section in cross section.
FIG. 2 is an enlarged cross-sectional view showing a cross section taken along line AA in FIG.
FIG. 3 is a plan view of the railcar pendulum cart shown in FIG. 1;
FIG. 4 is a front view showing a main part of a railcar pendulum trolley to which the present invention is applied, and showing a guide part in cross section.
FIG. 5 is a front view conceptually showing a railway vehicle equipped with a conventional pendulum cart.
[Explanation of symbols]
10 bogie frame 20 pillow beam 21 recess 22 pedestal 22a upper surface 23 flange portion 23a upper surface 30 pendulum frame 31 convex portion 31a lower surface 32 vertical wall 40 air spring 50 vehicle body 60 guide portion 61 rail guide 61a recess 62 guide rail 63 linear guide 70 linear motor 71 Electromagnetic coil (Linear motor primary side)
72 reaction plates (linear motor secondary side)
80 Pendulum suppression device 81 Electromagnetic solenoid 81a Plunger 82 Hole

Claims (3)

In the pillow beam arranged in the carriage frame, an arc-shaped bottom surface that curves downward with the vehicle's center of swing as the center is formed.
Forming an arcuate end surface facing the arcuate bottom surface around the center of swing of the vehicle on the pendulum frame fixed to the lower surface of the vehicle body,
Between the arc-shaped bottom surface of the pillow beam and the arc-shaped end surface of the pendulum frame, a linear motor that applies a driving force in the width direction of the vehicle to the pendulum frame is configured .
A position detection device for detecting the movement of the pendulum frame relative to the pillow beam,
A pendulum carriage for a railway vehicle , wherein the position detecting device detects that the pendulum frame is in a neutral position of the pillow beam, and the pendulum frame is locked in a neutral position by the linear motor . The pendulum cart for a railway vehicle according to claim 1,
A rail guide is provided on one of the pillow beam or the pendulum frame, and the other side of the pillow beam or the pendulum frame is fitted to the rail guide and moved in an arc shape around the center of swinging of the vehicle. A pendulum cart for a railway vehicle, characterized in that a guide rail is provided. A pendulum control method for a railcar pendulum cart according to claim 1 or 2 ,
A pendulum control method for a pendulum for a railway vehicle, wherein the vehicle body tilt moment generated by the linear motor when traveling on an arbitrary curved road is set to be smaller than the tilt moment generated by the vehicle body centrifugal force during the curve travel.

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